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Radiology 122 > Study Guide Digestive System 1st section Positioning > Flashcards

Study Guide Digestive System 1st section Positioning Flashcards

1
Q

Most common contrast media for the digestive system?

A

barium sulfate

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2
Q

When perforation is suspected what contrast is used?

A

water soluble iodinated contrast

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3
Q

Double contrast is?

A

barium and gas producing substance

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4
Q

single contrast is?

A

barium only (gastrograffin)

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5
Q

3 methods of contrast administration?

A

oral
reflux filling
direct injection (enterocylsis)

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6
Q

For the MBSS All Projections what is the cassette size?

A

10x12

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7
Q

For the MBSS (soft palate, Pharynx, Larynx, Cervical Esophagus) Lateral Projection what is the patient position?

A

seated/standing (true lateral)

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8
Q

For the MBSS (soft palate, Pharynx, Larynx, Cervical Esophagus) Lateral Projection what is the IR position?

A

Perpendicular to MSP

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9
Q

For the MBSS (soft palate, Pharynx, Larynx, Cervical Esophagus) Lateral Projection what is the CR position?

A

Perpendicular to IR
Oropharynx- @ level of mandibular angles
Larynx/pharynx/upper esophagus- @ level of laryngeal

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10
Q

For the MBSS all Projections what is the Collimation?

A

@ the level of EAM to jugular notch

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11
Q

For the MBSS (soft palate, Pharynx, Larynx, Cervical Esophagus) AP Projection what is the patient position?

A

upright

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12
Q

For the MBSS (soft palate, Pharynx, Larynx, Cervical Esophagus) AP Projection what is the IR position?

A

@ the level or below the laryngeal prominence

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13
Q

For the MBSS (soft palate, Pharynx, Larynx, Cervical Esophagus) AP Projection what is the CR position?

A

Perpendicular to laryngeal prominence

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14
Q

For (Esophagus) all AP/PA, AP/PA Oblique, Lateral Projection what is the SID?

A

40”

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15
Q

For (Esophagus) all AP/PA, AP/PA Oblique, Lateral Projection what is the cassette size?

A

14x17

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16
Q

For (Esophagus) all AP/PA Projection what is the patient position?

A

supine/prone

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17
Q

For (Esophagus) all AP/PA Projection what is the IR position?

A

center to the MSP

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18
Q

For (Esophagus) all AP/PA, AP/PA Obliques, lateral Projection what is the CR position?

A

Perpendicular to Midpoint of IR @ the level of T5-T6

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19
Q

For (Esophagus) all AP/PA, AP/PA oblique, lateral Projection what is the collimation?

A

12x17

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20
Q

For (Esophagus) all AP/PA Oblique Projection what is the patient position?

A

Recumbent RAO (prone) LPO (supine) with a 35-40 degree angle

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21
Q

For (Esophagus) AP/PA Oblique Projection what is the IR position?

A

Center elevated side to the grid through the plane 2” lateral to MSP

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22
Q

For (Esophagus) Lateral Projection what is the patient position?

A

lateral position recumbent

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23
Q

For (Esophagus) Lateral Projection what is the IR position?

A

Center MCP

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24
Q

For (Stomach/duodenum) all PA, PA oblique, AP oblique, lateral, AP projection what is the SID?

A

40”

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25
For (Stomach/duodenum) all PA, PA oblique, AP oblique, lateral, AP projection what is the cassette size?
10x12 or 14x17 (lengthwise)
26
For (Stomach/duodenum) PA projection what is the patient position?
recumbent/upright
27
For (Stomach/duodenum) PA projection what is the IR position?
1-2" above lower rib margin Prone- @level of L1-L2 Upright- center @ 3-6" below L1-L2
28
For (Stomach/duodenum) all PA, PA oblique, AP oblique, lateral, and AP projection what is the CR position?
Perpendicular to IR
29
For (Stomach/duodenum)All PA, AP, PA oblique,AP oblique, lateral projection what is the Collimation?
smaller patient 10x12 | larger patient 11x14
30
For (Stomach/duodenum) all PA, AP, PA oblique, AP oblique, lateral projection what are the respiration instructions?
suspend at end of expiration
31
For (Stomach/duodenum) PA Oblique RAO projection what is the patient position?
recumbent with 40-70 rotation (show pyloric canal/duodenum) | Hypersthenic patient require greater degree of rotation than asthenic/sthenic
32
For (Stomach/duodenum) PA Oblique RAO projection what is the IR position?
1-2" above lower rib margin @ level of L1-L2 (prone)
33
For (Stomach/duodenum) AP Oblique LPO projection what is the patient position?
supine with a 45 degree for sthenic patient | degree can vary 30-60 degree
34
For (Stomach/duodenum) AP Oblique LPO projection what is the IR position?
@ the level of body of the stomach
35
For (Stomach/duodenum) Lateral projection what is the patient position?
upright left lateral (left retro gastric space) | recumbent right lateral (right retro gastric space)
36
For (Stomach/duodenum) Lateral projection what is the IR Position?
@ level of L1-L2 (recumbent) (about 1-2" above the lower rib margin) @level L3 (upright)
37
For (Stomach/duodenum) AP projection what is the patient position?
Supine
38
For (Stomach/duodenum) AP projection what is the IR position?
@ level midway between xiphoid process and lower rib margin (10x12) adjust up or down based on diaphragm or small bowel (14x17)
39
For (Small intestines) PA/AP projection what is the SID?
40"
40
For (Small intestines) PA/AP projection what is the cassette size?
14x17 lengthwise
41
For (Small intestines) PA/AP projection what is the Patient position?
prone/supine
42
For (Small intestines) PA/AP projection what is the IR position?
@ level of L2 for images taken within 30 minutes | @ level of iliac crest for delayed images
43
For (Small intestines) PA/AP projection what is the CR position?
Perpendicular to IR (early images) | @ level of iliac crest (delayed images)
44
For (Small intestines) PA/AP projection what is the collimation?
14x17 with 1 " past abdominal flanks
45
For (Small intestines) PA/AP projection what is the respiration instructions?
suspend at end of expiration
46
To show esophageal varices instruct the patient to?
exhale fully and swallow barium avoiding inspiration or take a deep breath and hold while swallowing
47
The average empty time of normal stomach is?
2-3 hours
48
Peristalsis occurs in intervals of?
3-4 seconds
49
The first portion of the Barium reaches ileocecal valve in how many hours?
2-3 hours
50
The last portion of the Barium reaches the ileocecal valve in how many hours?
4-5 hours
51
Barium reaches rectum within how many hours?
24 hours
52
In esophageal examinations what is the exposure time?
0.1 seconds or less
53
In stomach/small intestines examinations what is the exposure time for normal patients? patients with hypermotility?
0. 2 -0.5seconds | 0. 1 seconds or less for hypermotility patients
54
A ____ examination is a combination of single contrast and double contrast methods during the same procedure.
biphasic
55
For a single contrast barium what is the weight/volume used?
60%
56
The head end of the table is lowered ____ to ____ degrees to show a hiatel hernia?
25-30 degrees
57
To show esophageal regurgitation and hiatel hernias the head end of the table is lowered ____ to ____ and the patient is rotated slightly to the right side to place esophagogastric junction in profile
10-15 degrees
58
The double contrast barium weight/volume is?
up to 250%
59
The biphasic weight/volume is?
15%
60
First exposure of the small intestine is usually taken ____ minutes after the patient drinks barium?
15
61
The next exposure of the small intestine varies from ___ to ____ minutes/
15-30
62
For hypomotility patients the radiologist will give __________ after ___ or ___ hours of administrating barium sulfate?
iced water, 3,4

Radiology 122 (18 decks)

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